Berenjeno con bigote

English translation: chamfer strips with lip seals

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Used in formwork for casting concrete columns. This is a broad PVC strip with parallel lines of sealing elastomer (the "bigotes"). It is fitted between metal formwork panels (set at right angles) to "achaflar" the corners.

Many thanks for the link to the photos trans4u. My photos have what looks to be a simple flat strip rather than the 3 dimensional forms shown here. There is also mention of "alas" for mine - these are simply bits that stick out at the back of the panels and allow you to slide the strip up and down or in and out a bit to correctly position it. The "bigotes" are definitely the sealing strips.